Author: remi
Date: 2008-12-13 17:12:14 +0100 (Sat, 13 Dec 2008)
New Revision: 3085
Modified:
software_suite_v2/tuxware/pytuxisalive/branches/complete_refactoring/src/tuxisalive/lib/daemonizer/Daemonizer.py
software_suite_v2/tuxware/pytuxisalive/branches/complete_refactoring/src/tuxisalive/lib/daemonizer/__init__.py
software_suite_v2/tuxware/pytuxisalive/branches/complete_refactoring/src/tuxisalive/lib/daemonizer/version.py
Log:
* fixed encoding
* updated version
* updated comments
Modified:
software_suite_v2/tuxware/pytuxisalive/branches/complete_refactoring/src/tuxisalive/lib/daemonizer/Daemonizer.py
===================================================================
---
software_suite_v2/tuxware/pytuxisalive/branches/complete_refactoring/src/tuxisalive/lib/daemonizer/Daemonizer.py
2008-12-13 15:42:10 UTC (rev 3084)
+++
software_suite_v2/tuxware/pytuxisalive/branches/complete_refactoring/src/tuxisalive/lib/daemonizer/Daemonizer.py
2008-12-13 16:12:14 UTC (rev 3085)
@@ -1,179 +1,217 @@
-# -*- coding: latin1 -*-
-
-import version
-__date__ = version.date
-__version__ = version.version
-__licence__ = version.licence
-del version
-
-# Distributed under the terms of the GNU General Public License
-# http://www.gnu.org/copyleft/gpl.html
-
-import os
-import sys
-import errno
-
-class PIDFile(object):
- """Class to deal with the pidfile. The original version come from the
sysklogd package,
- under GPL Copyright (c) 1995 Martin Schulze <[email protected]>
- """
- def __init__(self, name, path = "/var/run"):
- """Constructor of the class.
-
- @param name: name of the daemon.
- @param path: path of the pid file.
- """
- self.__PIDFILE = "%s/%s.pid" % (path, name)
-
- def read(self):
- """Read the pid value from the pid file.
-
- @return: pid if exists or 0.
- """
- pid = 0
- try:
- f = open(self.__PIDFILE, "r")
- try:
- pid = int(f.readline())
- finally:
- f.close()
- except:
- pass
- return pid
-
- def write(self):
- """Write the pid value in the pid file.
-
- @return: the success of the operation.
- """
- pid = os.getpid()
- result = False
- try:
- f = open(self.__PIDFILE, "w")
- try:
- f.write("%d\n" % pid)
- finally:
- f.close()
- result = True
- except:
- print 'can not write file'
- return result
-
- def check(self):
- """Check that an instance of the same program is started.
- If the program is already started, the function kill it.
- @return: False in all cases except for that a program is already
started.
- """
- pid = os.getpid()
- oldPid = self.read()
- # Program not runned or its pid is the same
- if (oldPid == pid) or (oldPid == 0):
- # RETURN only one instance.
- return False
- # Program is already started
- # Try to kill it.
- try:
- os.kill(oldPid, 0)
- # Can't kill it.
- except OSError, why:
- if why[0] == errno.ESRCH:
- # RETURN only one instance (old pid reference is broken)
- return False
- else:
- # RETURN not the only one instance (Can't kill the program)
- return True
- # RETURN only one instance (old pid instance has been killed)
- return False
-
- def remove(self):
- """Remove the pid file.
- """
- try:
- os.remove(self.__PIDFILE)
- except:
- pass
-
-class Daemonizer(object):
- """Class to daemonizing a program. (Unix)
- """
-
- def __init__(self, name, logPath, serviceFunct, redirectIO = True):
- """Constructor of the class.
-
- @param name: name of the program.
- @param logPath: path of the log file.
- @param serviceFunct: pointer to the service to run.
- @param redirectIO: indicate if the stdout and stdin must be redirected
- in the log file.
- """
- logFilename = '%s/%s.log' % (logPath, name)
- self.__daemonize(redirectIO, '/dev/null', logFilename, logFilename)
- self.__pidfile = PIDFile(name)
- self.__serviceFunct = serviceFunct
-
- def start(self):
- """Start the service as daemon.
-
- @return: the success of the operation.
- """
- result = True
- if not self.__pidfile.check():
- if not self.__pidfile.write():
- result = False
- else:
- result = False
- if result:
- try:
- self.__serviceFunct()
- except:
- result = False
- return result
-
- def destroy(self):
- """Destructor of the class.
- """
- pass
- #self.__pidfile.remove()
-
- #References: UNIX Programming FAQ
- #1.7 How do I get my program to act like a daemon?
- #http://www.erlenstar.demon.co.uk/unix/faq_2.html#SEC16
- #
- #Advanced Programming in the Unix Environment
- #W. Richard Stevens, 1992, Addison-Wesley, ISBN 0-201-56317-7.
- def __daemonize(self, redirectIO, stdin, stdout, stderr):
- """
- """
- # Do first fork.
- try:
- pid = os.fork()
- if pid > 0:
- sys.exit(0) # Exit first parent.
- except OSError, e:
- sys.stderr.write ("fork #1 failed: (%d) %s\n" % (e.errno,
e.strerror))
- sys.exit(1)
-
- # Decouple from parent environment.
- os.chdir("/")
- os.umask(0)
- os.setsid()
-
- # Do second fork.
- try:
- pid = os.fork()
- if pid > 0:
- sys.exit(0) # Exit second parent.
- except OSError, e:
- sys.stderr.write ("fork #2 failed: (%d) %s\n" % (e.errno,
e.strerror))
- sys.exit(1)
-
- # Now I am a daemon!
-
- # Redirect standard file descriptors.
- if redirectIO:
- si = file(stdin, 'r')
- so = file(stdout, 'w')
- se = file(stderr, 'w', 0)
- os.dup2(si.fileno(), sys.stdin.fileno())
- os.dup2(so.fileno(), sys.stdout.fileno())
- os.dup2(se.fileno(), sys.stderr.fileno())
+# -*- coding: utf-8 -*-
+
+import version
+__date__ = version.date
+__version__ = version.version
+__licence__ = version.licence
+del version
+
+# Copyleft (C) 2008 C2ME Sa
+# Remi Jocaille <[email protected]>
+# Distributed under the terms of the GNU General Public License
+# http://www.gnu.org/copyleft/gpl.html
+
+import os
+import sys
+import errno
+
+#
==============================================================================
+# Public class
+#
==============================================================================
+
+#
------------------------------------------------------------------------------
+# Class to deal with the pidfile.
+#
------------------------------------------------------------------------------
+class PIDFile(object):
+ """Class to deal with the pidfile.
+ The original version come from the sysklogd package,
+ under GPL Copyright (c) 1995 Martin Schulze <[email protected]>
+ """
+
+ #
--------------------------------------------------------------------------
+ # Constructor.
+ #
--------------------------------------------------------------------------
+ def __init__(self, name, path = "/var/run"):
+ """Constructor of the class.
+
+ @param name: name of the daemon.
+ @param path: path of the pid file.
+ """
+ self.__PIDFILE = "%s/%s.pid" % (path, name)
+
+ #
--------------------------------------------------------------------------
+ # Read the pid value from the pid file.
+ #
--------------------------------------------------------------------------
+ def read(self):
+ """Read the pid value from the pid file.
+ @return: pid if exists or 0.
+ """
+ pid = 0
+ try:
+ f = open(self.__PIDFILE, "r")
+ try:
+ pid = int(f.readline())
+ finally:
+ f.close()
+ except:
+ pass
+ return pid
+
+ #
--------------------------------------------------------------------------
+ # Write the pid value in the pid file.
+ #
--------------------------------------------------------------------------
+ def write(self):
+ """Write the pid value in the pid file.
+ @return: the success of the operation.
+ """
+ pid = os.getpid()
+ result = False
+ try:
+ f = open(self.__PIDFILE, "w")
+ try:
+ f.write("%d\n" % pid)
+ finally:
+ f.close()
+ result = True
+ except:
+ print 'can not write file'
+ return result
+
+ #
--------------------------------------------------------------------------
+ # Check that an instance of the same program is started.
+ #
--------------------------------------------------------------------------
+ def check(self):
+ """Check that an instance of the same program is started.
+ If the program is already started, the function kill it.
+ @return: False in all cases except for that a program is already
started.
+ """
+ pid = os.getpid()
+ oldPid = self.read()
+ # Program not runned or its pid is the same
+ if (oldPid == pid) or (oldPid == 0):
+ # RETURN only one instance.
+ return False
+ # Program is already started
+ # Try to kill it.
+ try:
+ os.kill(oldPid, 0)
+ # Can't kill it.
+ except OSError, why:
+ if why[0] == errno.ESRCH:
+ # RETURN only one instance (old pid reference is broken)
+ return False
+ else:
+ # RETURN not the only one instance (Can't kill the program)
+ return True
+ # RETURN only one instance (old pid instance has been killed)
+ return False
+
+ #
--------------------------------------------------------------------------
+ # Remove the pid file.
+ #
--------------------------------------------------------------------------
+ def remove(self):
+ """Remove the pid file.
+ """
+ try:
+ os.remove(self.__PIDFILE)
+ except:
+ pass
+
+#
------------------------------------------------------------------------------
+# Class to daemonizing a program. (Unix)
+#
------------------------------------------------------------------------------
+class Daemonizer(object):
+ """Class to daemonizing a program. (Unix)
+ """
+
+ #
--------------------------------------------------------------------------
+ # Constructor.
+ #
--------------------------------------------------------------------------
+ def __init__(self, name, logPath, serviceFunct, redirectIO = True):
+ """Constructor of the class.
+
+ @param name: name of the program.
+ @param logPath: path of the log file.
+ @param serviceFunct: pointer to the service to run.
+ @param redirectIO: indicate if the stdout and stdin must be redirected
+ in the log file.
+ """
+ logFilename = '%s/%s.log' % (logPath, name)
+ self.__daemonize(redirectIO, '/dev/null', logFilename, logFilename)
+ self.__pidfile = PIDFile(name)
+ self.__serviceFunct = serviceFunct
+
+ #
--------------------------------------------------------------------------
+ # Start the service as daemon.
+ #
--------------------------------------------------------------------------
+ def start(self):
+ """Start the service as daemon.
+ @return: the success of the operation.
+ """
+ result = True
+ if not self.__pidfile.check():
+ if not self.__pidfile.write():
+ result = False
+ else:
+ result = False
+ if result:
+ try:
+ self.__serviceFunct()
+ except:
+ result = False
+ return result
+
+ #
--------------------------------------------------------------------------
+ # Destructor of the class.
+ #
--------------------------------------------------------------------------
+ def destroy(self):
+ """Destructor of the class.
+ """
+ pass
+ #self.__pidfile.remove()
+
+ #
--------------------------------------------------------------------------
+ # Daemonize the application.
+ #
--------------------------------------------------------------------------
+ #References: UNIX Programming FAQ
+ #1.7 How do I get my program to act like a daemon?
+ #http://www.erlenstar.demon.co.uk/unix/faq_2.html#SEC16
+ #
+ #Advanced Programming in the Unix Environment
+ #W. Richard Stevens, 1992, Addison-Wesley, ISBN 0-201-56317-7.
+ def __daemonize(self, redirectIO, stdin, stdout, stderr):
+ """Daemonize the application.
+ """
+ # Do first fork.
+ try:
+ pid = os.fork()
+ if pid > 0:
+ sys.exit(0) # Exit first parent.
+ except OSError, e:
+ sys.stderr.write ("fork #1 failed: (%d) %s\n" % (e.errno,
e.strerror))
+ sys.exit(1)
+
+ # Decouple from parent environment.
+ os.chdir("/")
+ os.umask(0)
+ os.setsid()
+
+ # Do second fork.
+ try:
+ pid = os.fork()
+ if pid > 0:
+ sys.exit(0) # Exit second parent.
+ except OSError, e:
+ sys.stderr.write ("fork #2 failed: (%d) %s\n" % (e.errno,
e.strerror))
+ sys.exit(1)
+
+ # Now I am a daemon!
+
+ # Redirect standard file descriptors.
+ if redirectIO:
+ si = file(stdin, 'r')
+ so = file(stdout, 'w')
+ se = file(stderr, 'w', 0)
+ os.dup2(si.fileno(), sys.stdin.fileno())
+ os.dup2(so.fileno(), sys.stdout.fileno())
+ os.dup2(se.fileno(), sys.stderr.fileno())
Modified:
software_suite_v2/tuxware/pytuxisalive/branches/complete_refactoring/src/tuxisalive/lib/daemonizer/__init__.py
===================================================================
---
software_suite_v2/tuxware/pytuxisalive/branches/complete_refactoring/src/tuxisalive/lib/daemonizer/__init__.py
2008-12-13 15:42:10 UTC (rev 3084)
+++
software_suite_v2/tuxware/pytuxisalive/branches/complete_refactoring/src/tuxisalive/lib/daemonizer/__init__.py
2008-12-13 16:12:14 UTC (rev 3085)
@@ -1,28 +1,28 @@
-# -*- coding: latin1 -*-
-
-"""
-daemonizer
-==========
-
- Simple daemonizer for python.
-
- http://www.tuxisalive.com
-"""
-
-import version
-__name__ = version.name
-__author__ = version.author
-__date__ = version.date
-__version__ = version.version
-__licence__ = version.licence
-del version
-
-# Copyright (C) 2008 C2ME Sa
-# R�mi Jocaille <[email protected]>
-# Distributed under the terms of the GNU General Public License
-# http://www.gnu.org/copyleft/gpl.html
-
-#
-# logger package modules
-#
+# -*- coding: utf-8 -*-
+
+"""
+daemonizer
+==========
+
+ Simple daemonizer for python.
+
+ http://www.tuxisalive.com
+"""
+
+import version
+__name__ = version.name
+__author__ = version.author
+__date__ = version.date
+__version__ = version.version
+__licence__ = version.licence
+del version
+
+# Copyleft (C) 2008 C2ME Sa
+# Remi Jocaille <[email protected]>
+# Distributed under the terms of the GNU General Public License
+# http://www.gnu.org/copyleft/gpl.html
+
+#
+# daemonizer package modules
+#
from tuxisalive.lib.daemonizer.Daemonizer import *
\ No newline at end of file
Modified:
software_suite_v2/tuxware/pytuxisalive/branches/complete_refactoring/src/tuxisalive/lib/daemonizer/version.py
===================================================================
---
software_suite_v2/tuxware/pytuxisalive/branches/complete_refactoring/src/tuxisalive/lib/daemonizer/version.py
2008-12-13 15:42:10 UTC (rev 3084)
+++
software_suite_v2/tuxware/pytuxisalive/branches/complete_refactoring/src/tuxisalive/lib/daemonizer/version.py
2008-12-13 16:12:14 UTC (rev 3085)
@@ -1,17 +1,17 @@
-# -*- coding: latin1 -*-
+# -*- coding: utf-8 -*-
"""Version data for daemonizer"""
-# Copyright (C) 2008 C2ME Sa
-# R�mi Jocaille <[email protected]>
+# Copyleft (C) 2008 C2ME Sa
+# Remi Jocaille <[email protected]>
# Distributed under the terms of the GNU General Public License
# http://www.gnu.org/copyleft/gpl.html
name = 'tuxisalive.lib.daemonizer'
-version = '0.0.1'
+version = '0.0.2'
author = "Remi Jocaille ([email protected])"
description = "Python module to daemonizing a program."
licence = "GPL"
-date = "June 2008"
\ No newline at end of file
+date = "December 2008"
\ No newline at end of file
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